Electrical Engineering: Circuit theory MCQ

Getting Started with Electrical Engineering: Circuit theory MCQ:

1. Question

The z-parameters of the two port network shown in the figure are z₁₁ = 40Ω , z₁₂ = 60Ω , z₂₁= 80Ω and z₂₂ = 100 Ω. The average power delivered to R_L = 20Ω , in watts, is _______.

31.5 to 32.5
54.5 to 55.5
34.0 to 36.0
None of these

Answer

2. Question

In the balanced 3-phase, 50 Hz, circuit shown below, the value of inductance (L) is 10 mH. The value of the capacitance (C) for which all the line currents are zero, in millifarads, is ___________.

2.9 to 3.1
4.5 to 4.8
2.2 to 2.5
1.3 to 1.6

Answer

3. Question

In the circuit shown below, the initial capacitor voltage is 4 V. Switch S 1 is closed at = 0. The charge (in μC) lost by the capacitor from = 25 μ to = 100 μ is ____________.

5.6 to 6.1
7.9 to 8.5
6.8 to 7.2
9.5 to 9.9

Answer

4. Question

For the given circuit, the Thevenin equivalent is to be determined. The Thevenin voltage, V_Th (in Volt), seen from terminal AB is _________.

3.36
1.56
2.60
3.16

Answer

5. Question

The voltages developed across the 3 Ω and 2 Ω resistors shown in the figure are 6 V and 2 V respectively, with the polarity as marked. What is the power (in Watt) delivered by the 5 V voltage source?

5
7
10
14

Answer

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